Could AT&T FTTH Footprint Reach 44 Percent by End of 2019?

What does it mean that AT&T will have 14 million fiber to the home passings by about the end of 2019? In a broad sense, FTTH means a chance for AT&T to retake market share from cable TV operators, which have about 65 percent of the installed base of total U.S. consumer internet access connections.

“Whenever we go into a neighborhood and turn up fiber, 25 percent (take rate) comes fast and 50 percent is eminently achievable,” said Randall Stephenson, AT&T CEO. “And we actually think we can hopefully get beyond 50 percent as we continue to get this build completed.”

AT&T’s fixed network could represent--on the high side--perhaps 62 million consumer locations passed. That figure has to be interpreted. It could mean physical locations passed. It could mean dwelling units reached.

My own understanding is that this figure refers to dwelling units, not buildings. Here’s the difference: the U.S. housing stock is divided between detached houses and multiple dwelling units and other types of housing.

In 2000, detached housing represented about 60 percent of all U.S. housing units, according to the U.S. Census Bureau. In 2017, detached homes represented nearly 62 percent of housing.

So if AT&T’s fixed network is the same as the national average, AT&T’s network might pass 37.2 million single family homes. The rest of the housing units are apartments, condominiums, other forms of attached housing, mobile homes, boats and trailers.

So assume there are 24.6 million attached dwelling units in AT&T’s fixed network footprint. One has to estimate “locations” to be served from the dwelling unit counts. We will exclude boats, trailers or mobile homes as feasible FTTH locations. Assume that “locations” (buildings) represent about 28 percent of dwellings (by definition, an MDU is one location with multiple dwellings).

In that case, there might be some 6.9 million MDU locations in the AT&T fixed network service territory. That blends MDUs of all sizes into a composite average of 3.5 units per building. So make the universe of residential locations 31.5 million.

AT&T says it will have 14 million FTTH locations in service by the end of 2019. Assuming 100 percent of those locations are single-family homes, AT&T FTTH locations would be about 44 percent, with most of the rest served by fiber to the neighborhood. It is unclear how many all-copper lines remain in service, but it is possible there are as few as a million.

Still, AT&T’s interest in high-capacity access that costs less than FTTH remains. For even if it were able to boost its market share (installed base) of consumer internet access to as much as 50 percent, half the assets would still be stranded, producing no revenue.

For AT&T no less than Comcast, lower-cost infrastructure provides two benefits: fewer stranded assets and a lower-cost base, which provides more room to either lower retail prices or boost profit margins.

Keep in mind that 25 percent take rates also imply 75 percent stranded assets. Fixed wireless built on the 5G mobile network has clear potential advantages, including lower incremental cost to supply the equivalent of fixed access and lower total capex, with lower stranded asset risk.